/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import {Config} from "../Config.js"
import {fromJsonText_CircuitDefinition} from "../circuit/Serializer.js"

/**
 * @param {!Revision} revision
 */
function initTitleSync(revision) {
    const titleForState = jsonText => {
        //noinspection UnusedCatchParameterJS,EmptyCatchBlockJS
        try {
            let circuitDef = fromJsonText_CircuitDefinition(jsonText);
            if (!circuitDef.isEmpty()) {
                return `Quirk: ${circuitDef.readableHash()}`;
            }
        } catch (_) {
        }
        return Config.EMPTY_CIRCUIT_TITLE;
    };

    revision.latestActiveCommit().subscribe(jsonText => {
        // Add a slight delay, so that history changes use the old title.
        setTimeout(() => { document.title = titleForState(jsonText); }, 0);
    });
}

export {initTitleSync}
